on gun laws, what kinds of guns are used, whether they're legal, what do you know at this point? >> reporter: well, we have been asking around as to whether or not this was a hand gun that was legally owned, legally purchased, what the background is on that gun. obviously there are agents that will handle that part of the investigation. i haven't been able to confirm anything on that end just yet. however, hand guns in the state of texas, you are legally allowed to carry a hand gun if you have the proper license and that sort of thing. however, just because you have that license doesn't mean you can carry guns on to a school campus. campuses and churches, there's a laundry list of places where you can't carry guns and school campuses are one of those. so as the sheriff here said in what i think was a school campus official said it's impossible to check the thousands and thousands of students that come through here, but in theory, this is not a place where you should have had a gun. >> all right, thank you very much. ed continues to work that story. as ed just mentioned, the texa